RESI AND COMMERCIAL FIRESTOP

https://nsiindustries.com/product/resi-and-commercial-firestop/

Resi & Commercial Firestop

Round Indicator Red Lens .500 Cutout

https://nsiindustries.com/product/round-indicator-red-lens-500-cutout/

Indicator Lgt Rnd RED Lens .500 Cutout